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IMPROVEMENT Ill MAKING SAND GORES FOR AXLE SKAINS AND HUB BOXES.

JAMES e. HoLT, or CHICAGO, ILLINOIS. Letters Patent No. 59,840., datedNovember 20, 1866.

. i SPECIFICATION. 'TO- ALL WHOM IT HAY OONGERN:

Be it known that I, JAMES G. HOLT, of Chicago, in the county of Cook,and State of Illinois, have invented a new and improved Inode of makingSand Cores for casting Axle Skains aud Hub Boxes; and I doiherebydeclare that the following is a full, clear, and exact descriptionthereof, reference being had to the accompanying drawings, in whichiFigure 1 is a side view of a core-box frame, having the core boxes andcoping applied to it ready to receiveA the sand.

' Figure 2 is a top view of fig. l.

Figure 3 is a section taken in awvertical plane through two hub-boxcores, core boxes, and frame. i Figure 4 is a perspective view of' acore box formaking cores for hub boxes, shown' in section.

Figure 5 is a perspective view of four sand cores, for making hub boxes.

Figure 6 is a vertical sectional view of two skain core boxes, theirflask and frame.

Figure 7 is a view of two sand cores for casting axle skains.

Similar letters of reference indicate corresponding parts in the severalfigures.

This invention relates to a new and useful mode of making sand cores tobe used in casting axle ska'ins and hub boxes, the moulds for said boxesand skains being made in any su'itable'manner. I

The nature of my invention consists in the employment of conical coreboxes, which are open at both ends, in conjunctionwith a frame which isadapted for supporting said boxes at both extremities and holding themrmly in perpendicular positions to the upper support, which latter isdesigned to receive upon it a flask or coping, all as will behereinafter described.A y l To enable others skilled in the art tounderstand my invention, I will describe its construction and operation.

In the accompanying drawings, A represents a framewhich consists of twoparallel and vertical plates which are formed on or secured, in a`perpendicular plane, to a bottoni plate, as shown in figs. l, 3, and 6.I prefer to make this frame A, of metal, and to strengthen it by'across-bar a, so that it shall not warp. Four holes are made, at suitabledistances apart, through the bottom plate of frame A, which holes areclosed at bottom by a fixed plate, ZJ; the diameter of each one of theseholes should be such that the lower end of the core box, which isinserted into it, should t snugly therein, without being allowed tomove.` The top of the frame, r A, is a perforated movable plate, B,which is fitted to -said frame, and held thereon by'dow'el pins orclamps, in a plane parallel to the plane 4of the bottom plate. Thecentres of the holes which are made through the plate B, should coincidewith the centres of the holes directly beneath them,and through thebottom plate of the frame A. The holes through plate B should also bemade so as to receive the upper ends of the core boxes snugly withinthem. The core boxes C, C, for making cores for hub boxes, shown infigs. I, 2, 3, and 4, are tubular cores, and they should be of suchlength that their upper ends will be lush with the upper surface of theplate, B, when` all the parts are in their proper places ready toreceive the sand, as shown in iig. 3. vA coping or shallow flask, D, isput upon the plate B, and suitably secured thereon by pins or clamps.When it is desired tu produce an annular space or depression upon theinterior surface of a hub box, a corresponding interior depression isformed on the boxes C, C, as shown in igs.'3 and 4, for producing theelevation, e, on the core. The fiat rings, which I have shown in thecore boxes, will readily slip out of them when they are drawn from thecores. vThese rings, e', being made in two parts or halves, may beremoved from the cores Without breaking the core in so doing. f

The core boxesand iiask are filled with sand which is rammed in theusual manner of making cores, after which the whole should be carefullyinverted and the core boxes, frame, and plate, B, removed, leaving thesand cores, as shown in iig. 5, ready for receiving over them suitablemoulds. T/he sand which is in the flask, D, serves as a bed for the sandhaving the moulds in it. A I

The cores for axle skains are made substantially in the manner abovedescribed for making cores for boxes," the only difference being, thatan axle skain which is made very perfect and smooth is used as the corebox, as shown in lig. 6. That portion of the largest end of theaxle-skeincore box, c', which extends above or beyond one half of thebead, g, projects above the surface of the plate B, and produces a mouldin the iiask D, as shown in g. 7. i

`Itwill be seen, from the above description, that I am enabled toproduce cores with great facility, the axe: 'of which will be exactlyperpendicular to the face of the sand bed in the flask D; consequently,when the mouldf are adjusted over the lcores the. latter will be in aproper position for receiving the metal around lahem, and producing agood casting. Y p

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-4 1. A frame which is constructedsubstantially as described, and adapted for sustaining core boxes in afixed position during the operation of making a sand core.

2. The mans, substantially as explained, for making one or many sandcores upon a sand bed, so that the axis of the core shall beperpendicular to said bed, thus ensuring the'proper centering of thecore in the mould for which it is adapted, substantially as set forth.

JAMES G, BOLT. Witnesses:

CEAS. B. BRoAWN,

FRANCIS OKANE.

aasio.

